TW200801716A - A high-brightness diffusion plate with trapezoid lens - Google Patents

A high-brightness diffusion plate with trapezoid lens

Info

Publication number
TW200801716A
TW200801716A TW95123211A TW95123211A TW200801716A TW 200801716 A TW200801716 A TW 200801716A TW 95123211 A TW95123211 A TW 95123211A TW 95123211 A TW95123211 A TW 95123211A TW 200801716 A TW200801716 A TW 200801716A
Authority
TW
Taiwan
Prior art keywords
diffusion plate
trapezoid lens
brightness
high
trapezoid
Prior art date
Application number
TW95123211A
Inventor
zhi-hui Zhang
kai-xin Li
ren-huai Zhang
Zhi-Hong Wang
Original Assignee
Entire Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Entire Technology Co Ltd filed Critical Entire Technology Co Ltd
Priority to TW95123211A priority Critical patent/TW200801716A/en
Publication of TW200801716A publication Critical patent/TW200801716A/en

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/02Diffusing elements; Afocal elements
    • G02B5/0273Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278Diffusing elements; Afocal elements characterized by the use used in transmission
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/02Diffusing elements; Afocal elements
    • G02B5/0205Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0231Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/02Diffusing elements; Afocal elements
    • G02B5/0205Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051Diffusing sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F2001/133607Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Abstract

A high-brightness diffusion plate with trapezoid lens applied to a direct-type backlight module is disclosed. The high-brightness diffusion plate with trapezoid lens provided in this invention consists of a diffusion plate and a plurality of trapezoid lens disposed on at least one side of the diffusion plate for improving light efficiency and diffusion effect of the diffusion plate. By the diffusion plate with trapezoid lens, the direct-type backlight module provides better light output as well as more uniform brightness. Moreover, the diffusion plate of the present invention is used in combination with all or part of optical film. The optical film includes brightness enhancement film (BEF), an upper diffuser sheet and a lower diffuser sheet. The diffusion plate is made from plastic. The diffusion plate and the plurality of trapezoid lens are easily formed in an integrated part by using plastic extrusion method. Therefore, the direct-type backlight module has better light output efficiency with lower cost.
TW95123211A 2006-06-27 2006-06-27 A high-brightness diffusion plate with trapezoid lens TW200801716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW95123211A TW200801716A (en) 2006-06-27 2006-06-27 A high-brightness diffusion plate with trapezoid lens

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW95123211A TW200801716A (en) 2006-06-27 2006-06-27 A high-brightness diffusion plate with trapezoid lens
US11/652,570 US7503674B2 (en) 2006-06-27 2007-01-12 High-brightness diffusion plate with trapezoid lens

Publications (1)

Publication Number Publication Date
TW200801716A true TW200801716A (en) 2008-01-01

Family

ID=38873365

Family Applications (1)

Application Number Title Priority Date Filing Date
TW95123211A TW200801716A (en) 2006-06-27 2006-06-27 A high-brightness diffusion plate with trapezoid lens

Country Status (2)

Country Link
US (1) US7503674B2 (en)
TW (1) TW200801716A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102147488A (en) * 2011-03-11 2011-08-10 北京化工大学 Diffusion plate of multilayered diffusion particle layer
CN102183804A (en) * 2011-03-11 2011-09-14 北京化工大学 Multi-layer variable combined diffusion plate
US8203156B2 (en) 2009-10-02 2012-06-19 Everlight Electronics Co., Ltd. Light-emitting diode structure
TWI393922B (en) * 2008-07-16 2013-04-21

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080292871A1 (en) * 2007-05-22 2008-11-27 Cheng-Hsin Yeh Optical Film Device
ITMI20061203A1 (en) * 2006-06-22 2007-12-23 X X
US7855763B2 (en) * 2007-02-19 2010-12-21 Mitsubishi Electric Corporation Backlight device and transmission type display apparatus
US20080225202A1 (en) * 2007-03-15 2008-09-18 Hanbitt Joo Optical sheet and liquid crystal display device having the same
US7872705B2 (en) * 2007-07-29 2011-01-18 Cree, Inc. LED backlight system for LCD displays
TWM334346U (en) * 2007-12-25 2008-06-11 Nano Prec Corp Light guide plate and surface lighting device
CN101482671B (en) * 2008-01-08 2011-07-06 璨飞光学(苏州)有限公司 Backlight module with optical film having double-layer structure
US20090279175A1 (en) * 2008-05-07 2009-11-12 Rohm And Haas Denmark Finance A/S Optical diffuser film with linear domains of varying diffusion
KR101052799B1 (en) * 2008-05-28 2011-07-29 엘지전자 주식회사 Optical sheet, backlight unit and liquid crystal display including the same
US7787074B2 (en) 2008-05-28 2010-08-31 Lg Electronics Inc. Optical sheet, backlight unit, and liquid crystal display
US8004760B2 (en) * 2009-10-28 2011-08-23 Microsoft Corporation Rear-projection display
TW201116896A (en) * 2009-11-03 2011-05-16 Wintek Corp Light emitting module
US20110134646A1 (en) * 2009-12-08 2011-06-09 Industrial Technology Research Institute Light uniformization structure and light emitting module
US8545062B2 (en) * 2009-12-08 2013-10-01 Industrial Technology Research Institute Light uniformization structure and light emitting module
EP2374841B9 (en) * 2010-04-09 2014-12-24 Almaak international Gmbh Transparent plastic material
CN106030347B (en) * 2014-01-23 2018-12-18 飞利浦灯具控股公司 Light diffuser, LED light arrangement and manufacturing method using the light diffuser
TWM519090U (en) * 2015-11-17 2016-03-21 Polyway Industry Co Ltd Light emitter capable of emitting uniform light source
CN105549135B (en) * 2016-01-27 2018-01-12 张家港康得新光电材料有限公司 Brightness enhancement film, its preparation method and include its display device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7364341B2 (en) * 1999-02-23 2008-04-29 Solid State Opto Limited Light redirecting films including non-interlockable optical elements
US6086212A (en) * 1997-09-08 2000-07-11 Kuraray Co., Ltd. Panel light source device and display comprising it
JP4609962B2 (en) * 2000-02-02 2011-01-12 日東電工株式会社 Optical film
US7408708B2 (en) * 2004-04-16 2008-08-05 Dai Nippon Printing Co., Ltd. Diffusing sheet, surface light source unit, and transmission type display

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI393922B (en) * 2008-07-16 2013-04-21
US8648360B2 (en) 2009-10-02 2014-02-11 Everlight Electronics Co., Ltd. Light-emitting diode structure
US8203156B2 (en) 2009-10-02 2012-06-19 Everlight Electronics Co., Ltd. Light-emitting diode structure
CN102183804A (en) * 2011-03-11 2011-09-14 北京化工大学 Multi-layer variable combined diffusion plate
CN102147488B (en) 2011-03-11 2013-01-23 北京化工大学 Diffusion plate of multilayered diffusion particle layer
CN102183804B (en) 2011-03-11 2013-03-13 北京化工大学 Multi-layer variable combined diffusion plate
CN102147488A (en) * 2011-03-11 2011-08-10 北京化工大学 Diffusion plate of multilayered diffusion particle layer

Also Published As

Publication number Publication date
US20070297168A1 (en) 2007-12-27
US7503674B2 (en) 2009-03-17

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